Nailing machine



Dec. 14, 1948. G. E. STILWELL ET AL 2,456,221

NAILING MACHINE Original Fild Dec. 15, 1941 1"!v Shets-Sheet 1' INVEN TOQS GLENN E. STILWELL GERALD c. P TON ATTOQNEY G. E. STILWELL ET AL Dec.14, 1948.

NAILING MACHINE Original Filed Dec. l5,

l7 Sheets-Sheet 2 INVENTOQS: GLENN E. ST/LWELL- GERALD c. PAXTON Dec.14, 1948. G. E. STILWELL ET AL.

NAILING MACHINE l7 Sheets-Sheet 3 1 Original Filed Dec. 15, '1941 Dec.14-, 1948. e. E. STILWELL ET AL NAILING MACHI-NE Original Filed Dec. 15,1941 1''! Sheets-Sheet 5 INVE/VTQQJ; GLENN E. $T/VL WELL ATTbQ/VEY Dec.14, 1948. G. E. STILWELL ET AL NAILING MACHINE Original Filed Dec.

' ATTOQ/VfY l7 Sheets-Sheet 6 IM E/VM S: I GLENN E. STILWELL GERALD C.PAXTON ec. 1-4, 1948-. G. E. STILWELL ET AL Original Filed Dec. 15, 1941NAILING MACHINE l7 Sheets-Sheet 7 \fld lllllllllllllllllml A a a p.

INVZNTOQS GLENN E. STILWELL GERALD C. PAXTON ATTOQNEY Dec. 14, 1948. G.EiSTlLWELL ET AL 2,

NAILING' MACHINE Original Filed Dec. 15, 1941 17 Sheets-Sheet 8 Dec. 14,1948. G. E. STILWELL ET AL 2,456,221

' NAILING MACHINE Original Filed Ber. 15, 1941 l"! Sheets-Sheet 9 tl/Vl/EN T028 GLENN E. STILWELL g GERALD C. PAXTON A TTOQNEY G. E.STILWELL ET AL Dec. 14, 1948.

NAILING MACHINE 17 Sheetls-Sheet 10 Original Filed Dec. 15, 1941ATTOQ/Vf) llVl/f/VTOQS GLENN E. STILWELL GERALD c. PAXTON Dec. 14, 1948.G. E. STILWELL} ET AL 2,456,221

NAILING MACHINE I Original Filed Dec. .15, 1941 17 Sheets-Sheet ll ATTOQ/VEV Dec. 14, 1948.

G. E. STILWELL ET AL NAILING MACHINE 1'7 Sheets-Sheet 12 Original FiledDec. 15, 1941 m/mlroQs: GLENN E. ST/LWELL GERALD C. PAXTON A Tme/vn Dec.14, 1948. G. E. STILWELL ET AL NAILING MACHINE 17 sheets-sheet 15Original Filed Dec. 15, 1941 wmm km a mam G. E. STlLWELL ET AL I2,456,221

Dec. 14, 1948.

NAILING MACHINE 17 Sheets-Sheet 14 lA/W/VTOQS GLENN E. STILWELL GERALD*C. PAXTON Original Filed Dec. 15, 1941 ATTOQ/VEY Dec. 14, 1948. G. E.STILWELL ET AL NAILING MACHINE 17 Sheets-Sheet 15 Original Filed Dec//VV[/VTOQJ GLENN E. STILWELL GERALD C. PAXTON ATTOQ/VEY Dec. 14, 1.948.G. E. STILWELL ET AL 2,456,221

NAILING MACHINE Original Filed Dec. 15, 1941 1'7 Sheets-Sheet l6 A B c a'm/ K 1,

GLENN E. ST/LWELL GERALD C. PAXTON A TTOQNE Dec. 14, 1948. a. E.STlLWELL ET AL NAILING MACHINE 17 Shee'ts-Sheet 17 Original Filed Dec.15, 1941 mam my mw M IED NL N A um 66 Patented Dec. 14, 1948 NAILINGMACHINE.

Glenn E. Stilwell, Riverside, and Gerald 0. Paxton, Huntington Beach,Calif., assignors to Food Machinery and Chemical Corporation, a corpo-'ration of Delaware Original application December 15, 1941, Serial No.423,052, now Patent No. 2,378,948, dated June 26, 1945. Divided and thisapplication June 18, 1945, Serial No. 600,138

This invention relates to nailing machines and has particular utility inthe manufacture of crate heads.

It is an object of the invention to provide a novel crate head makerwhich is relatively low in first'cost and economical in operation.

The objects of this invention also embrace the provision in a nailingmachine of a novel shook magazine and feed mechanism; a novel workstacking mechanism; a novel nail chuck mechanism; a novel controlmechanism for. feeding the work intermittently from one position toanother; a novel means for adjusting such acontrol mechanism forrendering the same flexible as to the feeding intervals which can beproduced; and a novel means for manually setting or timing said feedcontrol mechanism.

It is a further object of the invention to provide a novel crate headmaker which is adjustable to permit the production of crate heads ofvarious sizes on the same machine.

. The manner of accomplishing the foregoing objects, as well as furtherobjects and advantages will be made manifest in the followingdescripdrawings, in which:

. Fig. 1 is a side elevational view of a preferred embodiment of theinvention;

Fig. 2 is a longitudinal horizontal sectional view taken on the line 2-2of Fig. 1.

Fig. 3 is a fragmentary cross sectional view taken on the line 3-3 ofFig. 2 and illustrating an emergency control switch of the invention.

' Fig. 4 is a fragmentary enlarged view taken on the line 44 ofFig. 2and illustrating the shock retarding file track of the invention.

Fig. 5 is a longitudinal vertical section taken on the line 5-5 of Figs.2 and 6.

Fig. 6 is a transverse sectional view taken on the line 6-6 of Fig. 5.

Fig. 7 is a diagrammatic sectional view taken on the line 11 of Fig. 6,and illustrating the manual safety switch release of my invention.

Fig. 8 is a diagrammatic fragmentary enlarged horizontal sectional viewtaken-on the line 88 of Fig. 5. v

Fig. 9 is an enlarged detailedsectional view taken on the line 99 ofFig. 2 and illustrating the manner in which the first pair of picksoperating on a crate head drop out of contact with the forward slot ofthis crate head after their function has been performed.

. Fig. 10 is a view similar to Fig. 9 illustrating the same circumstancein the operation of a 9 Claims. (Cl. 18.1)

second pair of picks on the panel of the crate head.

Fig. 11 is an enlarged plan view of one of the chains and pick devicesattached thereto which is employed'in the work assembling conveyor of myinvention. I

Fig. 12 is a side elevational view of Fig. 11.

Fig. "13 is a perspective view of the shook magazine of my invention andshowing its relation to the work assembling conveyor.

Fig. 14 is an enlarged longitudinal sectional view taken on the line lll4 of Fig. 2 and illustrates an initial step in the picking of shockfrom the magazine of the invention by the Work assembling conveyorthereof.

, .15 is a fragmentary viewsimilar to Fig. 14

and illustrates a further step in the operation,

the beginning of .which is shown in Fig. 14.

16 is a fragmentary detailed view taken on the line iii-I6 of Fig. 4 andshows how panels are supported in the panel hopper.

Fig. 17 is an enlarged transverse sectional view of the magazine of theinvention taken on the line I'l- I'I of Fig. 14.

. Fig. 18 is a horizontal fragmentary sectional view taken on the lineI8I 8 of Fig. 1'7.

Fig. 19 is an enlarged fragmentary view taken on the line [9- 19 of Fig.5 and illustrating the nail feed mechanism of my invention.

Fig. 20 is a sectional view taken on the line 20-40 of Fig. 19.

Fig. 21 is a view taken on the line 2l-2l of Fig 19.

Fig. 22 is a view similar to Fig. 19 and'illustrating the nail pickingmechanism of the invention in a different phase of its operation as whennails have just been picked.

Fig. 23 is an enlarged plan view of the compen- Y sating spiker chuck ofmy invention.

. Fig. 24'is a vertical sectional view taken on the line 2424 .of Fig.23.

- Fig.25 is a vertical sectional view taken in the same plane as Fig. 24but illustrating the nonoompensatingspiker chuck of my invention.

Fig. 26 is an enlarged vertical sectional view taken on the line 26-46of Fig. 6 and illustrating one of thedouble vertical nailing chucks ofthe invention positioned as when driving one or more nails.

Fig. 27 is a view similar to Fig. 26 illustrating said double chuck whenraised in relaxed or nonnailing position' Fig. 28 is a rear elevationalview of the double chuck aforesaid. l

Fig. 29 is a vertical sectional view taken on the line 29-29 of Fig. 2and illustrates the mechanism for operating one of the spiker nailingmechanisms of the invention.

Fig. 3c is a horizontal cross sectional view taken on the line- 3030 ofFig, 2'7.

Fig. 31 is a horizontal cross sectional view taken on the line 3I3l ofFig. 27.

Fig. 32 is a cross sectional view taken on the line 3232 of Fig. 24.

Fig. 33 is a wiring diagram of the electrical cirtaken on the line 3636of Fig. 6 and illustrating the power transmission of the invention aswhen the W r ss m lin con y r thereof is halted for an interval betweensuccessive intermittent mov ments th r f- Fig. 37 is a fragmentary viewof a portion of Fig. 3.6 and illustrates the situation when the workassembling conveyor is moving between successive stops.

Fig. 38 is a plan view of a crate head which the machine shown in thedrawings is adapted to move.

Fig. 39 is an enlarged view of the slip clutch of the conveyor drive ofmy invention and is taken on the line 3939 of Fig, 6. I

Fig. 40 is a cross sectional view of said clutch taken on the line 4D4llof Fig. 39.

Fig. 41 is an enlarged sectional viewtaken on the line 4i-4I of Fig. 6and illustrating the manual timing mechanism for timing the intermittentwork assembly conveyor drive mechanism of the invention.

Fig. 42 is an enlarged side elevational view taken in the direction ofthe arrow 42 in Fig. 6 and illustrates the manner in which the timingmechanism aforesaid is manually controlled.

Fig 43 is a fragmentary sectional view taken on the line 4343 of Fig. 41and illustrates the means for manually, though temporarily, connectingsaid adjustment means operatively with intermittent drive mechanism forthe assembly conveyor.

Referring specifically to the drawings, the preferred embodiment of theinvention there illustrated is a crate head maker 48 (see Figs. 1, and6) which is a nailin machine and which in cludes a frame 50, anintegrating adjustable base 5!, a magazine 52, a work feeding conveyor53, a nailing mechanism 54, a stacking mechanism 55- and a power drivemechanism 56 for actuating and controlling the operation of theaforesaid feeding, nailing and stacking mechanisms. Portionsv of themagazine 52, the conveyor 53, the nailin mechanism 54 and the stackingmecha: nism 55 are mounted on the intergrating adjustable base 5|, thespaced relation .of these portions of these mechanisms being controlledby adjustment of this base so as to condition .the entire machine tooperate upon work having a. particular dimension, this dimension of thework being that which is disposed transv rs ly f the path of travel ofthe work through the machine.

Frame 50 The main element of the frame of the machine is a cast shell 60(see Figs. l, 2, 5, 6 and 8) which includes side walls 6! and 62 and endwalls 63. he. er d e o he s de, wa ls, SI and 2. tur

inwardly to provide horizontal border decks 64 (see Fig. 17). Thesewalls are also rigidly connected by transverse frame shafts 6'1, 68, 69,10 (see Figs. 5, 6 and 8).

The frame 58 includes reinforcing bars H which are provided on innerfaces of the sides 51 and 62 near their lower edges. Supported on thesebars and on the frame shafts 68 and 69 are bearing spiders T2 and 713.The bars H are connected by motor support channels 14 (see Figs. 5 6 and8). The bearing spiders l2 and 13 have main crank shaftbearings i5 andconveyor drive shaft bearings 76 (see Figs. 5 and 6). The frame bars Hare also'connected by a fixed shaft 18. The spider 72 has a pinreceptacle TI. The spider 13 (see Figs. 6, 8 and 36) has a jack shaftbearing 8i (see Figs. 8 and 36) a pawl pin bearing 8! and an idler armstud 82 (see Fig. 6) and a springrod ear 83 (see Fig. 36).

The end walls 63 have door holes 84 (see Fig. 5) whi h arep ferably pvided with doors 85 to completely enclose the mechanism inside the shell60, but provide ready access thereto whenever. this is necessary. Theside wall 62 is pro-' vided with an openin 86 which is concentric withthe conveyor drive shaft bearings (see Fig. t3) the purpose of thisopening to be made clear hereinafter.

The frame 5! also includes an arch-like tower 90 (see Figs. 1, 5 and 6)having side standards 91 and 92 which are rigidly fixed on the sidewalls BI and 62 and are connected at their upper ends by a slopingbridge 93. The standards 9| and 92 have slideway and bearing brackets94, these brackets having bearings 95 and 95. Also included in the frameis a shaft 91 which is rigidly fixed on the bearings 95.

Integrating adjustable base 51 This base includes two foundation membersI00, each of these including a heavy metal beam ljfil, these beams beingparallel and spaced from each other .(see Figs. 5, 6 and 8) and beingnotched so that their lower edges receive and rest onthe. rigid frameshafts 61, 68. 69 and 10. Thus these beams are slidable laterallyrelative. to each. other on the frame 5 l. Parall l with and disposedoutwardly from each of these beams are rs I82 w ich i ably rest on theshafts 68 an 69 and are rigidly connected to this beam by bars "33. v

The members 5130 are provided with right and left-hand threaded nuts H24(see Fig. 8) intowhich shafts WE are screwed. These shafts extendthrough suitable openings in the wall 62 and throughbrackets H16provided on these walls, these shafts being held against axial movementrelative to said brackets by sprockets I81 and collars 1B8 fixed onthese shafts. Trained about the sprockets ii]? is a chain IE9 whichcauses the rotation of either of these shafts to rotate the other insynchronism therewith. The ends of these shafts are squared and areadapted to be rotated as by the application of a crank H0 thereto.

The upper edges of the beams ill! (see Fig. 1'7) are on the same levelas the upper faces of the horizontal border decks E i. Lying on thesedecks and these beams; and welded to the latter, are a pair of deckplates H5 which extend through out the length of the machine. The outeredges of the plates I I5. are held in snug sliding relation with thehorizontal border decks 64 by bolts H6 which extend downwardly throughslots Ill in th se decksisee Fig. 2)..

. Magazine 52 V This magazine is best shown in Figs. 13, 14, 15, 1'1 and18. It includes two agazine sections I I8 which are substantialduplicates of each other, each of which is mounted on one ofthe deckplates II5. Each section II8 includes front and rear brackets lI9 andI28, which support a rail hopper I2I extending upwardly outwardlytherefrom at an angle of about 45. The hopper I2I has a rod I22extending acrossits upper'edge and which is mounted on an adjustablerail flusher I23 which lies on the rear side of the hopper and iscapable of being shifted to adapt the hopper I2I for rails of differentlengths. The hopper I2I has guide strips I24, the lower ends of whichare curvedupwardly (see Figs. 13 and 17) so asto deliver rails onto thetop of magazine track plates I25, the inner edges of which are flushedwith the inner edges of the deck plates II5.

Extending between each pair of brackets H9 and I20 is a rod I30 whichcarries a spring guide I3I which guides the rails R onto the curvedportion of the guide strips I24. Provided on the brackets I I9 and I20are inwardly extending arms I 32 and I33 (see Fig. 13). Disposed justinside of and secured to each pair of these arms, and extending upwardlytherefrom, is an end wall I34 of a multiple post slat and panel hopperI35. Each of the walls I34 has front and rear flanges I36 and I31 andhas horizontal slots I38.

The space within the post, slat and panel hopper I35 is adjustablydivided by vertical guide members I39 and I40 which are secured to thehopper end walls I34 by bolts 'I4I extending through the slots I38.,. Apanel hopper I45 is thus provided between the two walls I34, the twoflanges I36 and the two vertical guide members I39.

A slat hopper I46 is likewise formed between the vertical members I39and I40 and a post hopper I41 is provided between the members I40 andthe rear end wall flanges I31. When the shook is placed in the hoppersI45, I46 and I41 the ends of the shook are guided by; guides I50, II,I52 and I53. Of these the guides I50 are secured to the magazine endwalls I34. The guides I5I and I52 are provided on the vertical membersI39 and I40 respectively and the guides I53 are fixed on the ends ofspacers I54 which are secured to the end walls I34 by bolts I55 passingthrough the slots I38. The reason for the guides I53 being'on spacersI54 is that the posts 0 for which the hopper I41 is provided areconsiderably shorter than the slats and panels for which the hoppers I46and I45 are provided.

Secured to the outer face of each wall I34 adjacent its lower edge andopposite the hopper I45 is a sheet angle member I66 (see Figs. 13 and17) which provides an inwardly extending shelf I6I, these shelvessupporting opposite'ends of a load of panels P which may be placed inthe hopper I45. I end wall flanges I36 and the adjacent portions of thebracket arms I32 are disposed above the shelves I6 I, the latterextending forwardly thereunder. Adjustable panel retaining gauges I62are secured to the arms I32 and are substantially coextensive in lengthwith the forward ends of the shelves I6I (see Figs. 14 and 16).

Adjustably secured on the vertical members I39 (see Figs. 13 and 14) bycap screws I63, are slat retention members I64 which extend asubstantial distance inwardly into the multiple hopper I35 and liejust-in advance of the slat hopper I46.. Secured to the lower endsof-guides I53 and The lower ends of the front hopper extendingforwardlybeneath'the slat and panel hoppers I46 and I45, areyieldableslat supporting guide arms I65 (see Figs. 14 and 17). Thebottom ends of the vertical guidemembers I40 are provided with inclinedguides I66. Disposed inwardly somewhat from these guides; and supportedon bracket arms.l33 (see Figs. 13, 14 and 15), are post supports I61having inclined portions I68 which are parallel with. guides I66 andeach of which is provided with an escapement mechanism I'll. Thismechanism includes a rocker lever I12 having end fingers I13 and I14.This rocker 'is normally held in the position in which it is shown inFig. 15, by a spring. I15, but is capable of being rocked into theposition in which it is shown in Fig. 14 by the feeding of post 0forwardly from the bottom hopper I41. Each wall I34 and associatedflanges etc. described hereinabovecomprises one half of the hopper I35and may, therefore, be referred to as a hopper half." This hoppercomprises the main portion of the magazine 52 in that it feeds theposts, slats and panels downwardly into the path of the conveyor 53.

Work feeding conveyor This conveyor operates to feed shock from themagazine 52 and assemble this in proper relation so that when this isnailed together it will produce, a crate head. This conveyor (see Figs.5 and 8)" includes a pair of drive sprockets I having sleeve hubs I8Iwhich are suitably journalled in beams IOI. It also includes drivensprockets'l82 which are rotatably mounted on studs I83 fixed on thebeams IOI at the rear end of the magazine 52.

Extending through the sleeve hubs I8I and having splined connectiontherewith is a drive shaft I84. Fixed centrally on this shaft is adriven sprocket I85, end play of the shaft bein prevented by yokes I86mounted on the frame shaft 69 and disposed close to opposite faces ofthe sprocket I85. Trained about the sprockets I80 and I82 are conveyorchains I88 (see Figs. 5, 8, 9, 10, 11 and 12). In Fig. 8 thesechainsare. diagrammatically shown. In the normal func-L tioning of themachine 50, these chains travel. intermittently about the sprockets I80and I82. these chains being comprised of a number of shock picking unitsI89 (see Figs. 11 and 12), each of these units including a front postandslat. picking device I90, a panel picking device I9I and a rear slatand post pickingdevice I92. Half of each of these devices is provided onthe inner; face of one of the chains I88 and the corresponding otherhalf is provided on the inner face, of the other chain I88 directlyopposite the first half of this device.

Each of these halves of each device I90 lncludes a, pick I which ispivotally mounted on a chainpin I96 and is connected by a link I91 to ahigh link plate I98. The pick I95 is provided. with a pin I99 whichlimits the rotation 0f a front post positioner 200 which is also'pivotally mounted on the pin I96. The positioner 200 has a roller 205,the purpose of which will be made manifest hereinafter.

Each half of each device I9I includes a plate 206 which is fixed on oneof the link plate's'of the chain I88 and has a slot 201 which receives abolt 208 and rigidly positions a spacer 209 m this slot. Pivotallymounted on this spacer is a panel pick 2), this pickhaving stop pins'2IIand 212 and a. roller 2I3. The pins 2 and 2I2; limit the. swingingofithe pick. 21!). ab i1t:...t,11e

